TLDR Tech / Data
Semantic Layers in Apache Superset: SIP-182 and Apache Ossie
Apache Superset is adding first-class semantic layer support, replacing pseudo-databases for metrics and dimensions. A new SemanticLayer/Explorable interface converts chart requests into SemanticQuery objects and returns Arrow tables, targeted for Superset 7.0. Apache Ossie is also being built as a vendor-neutral JSON/YAML interchange layer.
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